Time in MST and JST
The time difference between Mountain Standard Time (MST) and Japan Standard Time (JST) is 16 hours. Japan Standard Time is 16 hours ahead of Mountain Standard Time.
This means 9am MST is 1am JST (next day) and 5pm MST is 9am JST (next day).
Mountain Standard Time
- The current local time in MST is 8:01 am (June 24, 2026)
- MST time zone offset is UTC-07:00
Japan Standard Time
- The current local time in JST is 10:01 am (June 24, 2026)
- JST time zone offset is UTC+09:00
How to convert Mountain Standard Time to Japan Standard Time?
Add 16 hours to Mountain Standard Time to get Japan Standard Time.
Time in MST
00:00
Time in JST
00:00
Use the slider above to convert Mountain Standard Time to Japan Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| MST | JST |
|---|---|
| 12am | 4pm |
| 1am | 5pm |
| 2am | 6pm |
| 3am | 7pm |
| 4am | 8pm |
| 5am | 9pm |
| 6am | 10pm |
| 7am | 11pm |
| 8am | 12am |
| 9am | 1am |
| 10am | 2am |
| 11am | 3am |
| 12pm | 4am |
| 1pm | 5am |
| 2pm | 6am |
| 3pm | 7am |
| 4pm | 8am |
| 5pm | 9am |
| 6pm | 10am |
| 7pm | 11am |
| 8pm | 12pm |
| 9pm | 1pm |
| 10pm | 2pm |
| 11pm | 3pm |